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Secure DRM Scheme Based on Blockchain with High Credibility

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Chinese Journal of Electronics 2018年第5期27卷 1025-1036页

作者： MA Zhaofeng HUANG Weihua GAO Hongmin school of cyberspace security Beijing University of Posts and Telecommunications

Upon the fairness, security and flexibility problems of traditional digital rights management, we proposed a blockchain infrastructure service based DRM platform with high-level credit and security, in which we first proposed a Blockchain as a service(Baa S) architecture to decrease the complexity and difficulty of building up a blockchain-based business model, the Baa S infrastructure transparently provides easily-developed user interface to implement all core functions such as genesis block creation, consensus mechanism definition, node initialization and running, wallet management, address management,blockchain explorer et al. Then based on the Baa S infrastructure we proposed a blockchain-based DRM platform with high-level credit and security for Content provider(CP), Service provider(SP) and customers. We designed the blockchain as infrastructure service for DRM business model and provided core content rights information storage in blockchain for tamper-resistant copyrights protection from being misused, and the content consumers can use blockchain-based digital assets for content consumption payment, and the platform can help the content demandside and supply-side trading and the blockchain recorded the trade data as tamper-resistant evidence. Evaluation experiments manifests the proposed scheme is reliable and secure, and provided an efficient methodology for blockchain application business model implementation.

关键词： Blockchain infrastructure Digital rights management Tamper-resistance DRM trade

CPSec DLP: Kernel-Level Content Protection security System of Data Leakage Prevention

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Chinese Journal of Electronics 2017年第4期26卷 827-836页

作者： MA Zhaofeng school of cyberspace security Beijing University of Posts and Telecommunications

Data leakage prevention(DLP) is very important for sensitive or unauthorized data protection, however, most current DLP technologies are based on content monitor, detection and filtering, which can be easily bypassed or cheated. We propose a thorough and highlevel Content protection secure scheme of DLP(CPSec DLP) based on kernel-level mandatory encryption, in which we proposed mutual authentication and key agreement method between client and server, and we adopted SM2 algorithm for session key management; and we propose kernel-level mandatory secure middleware for unstructured data protection, in which the secure middleware works in File system driver(FSD) layer supporting for"write-encryption, open-decryption" operation, once the data is written to storage space either in hard-disk or USB disk the data is mandatorily encrypted, while when the data is open the mandatory secure middleware decrypts the data to plain in system memory. Moreover we propose data share and delivery among domain internal users and external customers. In the CPSec DLP scheme, the encryption algorithms, security policy and rules can be dynamically parameterized when necessary, while in the lifecycle the data management can only be used according to its usage control rules, such as read-only, write, save, print,export, backup rights. Upon the proposed CPSec DLP, we implemented the CPSec DLP system in kernel-level driver layer based on FSD, which supports parameterized process and document format for unstructured data leakage protection. Large amount of experiments manifest the proposed scheme is secure, reliable, extendible and efficient for kinds of format unstructured data leakage protection.

关键词： Content protection security Unstruc tured data leakage protection Kernel-level mandatory en cryption/decryption Usage controls

A Generalized Information security Model SOCMD for CMD Systems

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Chinese Journal of Electronics 2020年第3期29卷 417-426页

作者： ZHANG Baowen CHANG Xiao LI Jianhua school of cyberspace security Technology and Research Shanghai Jiaotong University

As a new security defense theory, cyberspace mimic defense(CMD) provides an architecture named Dynamic heterogeneous redundancy(DHR) to enhance the defense level of system security. Due to the new dynamic defense mechanism DHR introduced in CMD systems, traditional security modelling and analysis methods can hardly be used for them. In this paper, we propose a security ontology-based modelling method for CMD systems(SOCMD), which uses ontology to represent DHR components and to define their inner relationships. SOCMD also connects information components including DHRs with security vulnerabilities,threats and attackers in cyberspace. Next, attacking rules,multi-mode arbitration mechanism and combination rules are designed with SOCMD for CMD systems and a new logical-checking method is proposed to make judgement about the security state of SOCMD. Finally, different use cases and performance tests are developed to demonstrate the application process for the model and to verify the validity of our method.

关键词： Cyber mimic defense Dynamic heterogeneous redundancy Network security security model Ontology

Certificateless threshold signature from lattice

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Digital Communications and Networks 2024年第4期10卷 965-972页

作者： Huifang Yu Qi Zhang school of cyberspace security Xi'an University of Posts and TelecommunicationsXi'anChina

Threshold signature has been widely used in electronic wills,electronic elections,cloud computing,secure multiparty computation and other *** now,certificateless threshold signature schemes are all based on traditional mathematic theory,so they cannot resist quantum computing *** view of this,we combine the advantages of lattice-based cryptosystem and certificateless cryptosystem to construct a certificateless threshold signature from lattice(LCLTS)that is efficient and resistant to quantum algorithm *** has the threshold characteristics and can resist the quantum computing attacks,and the analysis shows that it is unforgeable against the adaptive Chosen-Message Attacks(UF-CMA)with the difficulty of Inhomogeneous Small Integer Solution(ISIS)*** addition,LCLTS solves the problems of the certificate management through key escrow.

关键词： Lattice Threshold signature Inhomogeneous small integer solution Certificateless public key Lattice sampling technique

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Cryptanalysis on ‘an arbitrated quantum signature protocol based on the chained CNOT operations encryption’

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The Journal of China Universities of Posts and Telecommunications 2019年第3期26卷 73-80页

作者： Wen Kai Zheng Shihui Sun Bin school of cyberspace security Beijing University of Posts and Telecommunications

Arbitrated quantum signature(AQS) is an important branch in quantum cryptography to authenticate quantum information, and cryptanalysis on AQS protocols helps to evaluate and improve security of AQS. Recently, it is discovered that an AQS protocol based on chained controlled-NOT(CNOT) algorithm is vulnerable to a novel attack because a transformation from binary keys into permutations and the chained CNOT algorithm have special properties, which enables a malicious receiver to forge signatures with probability 1/2. Moreover, a malicious signer can also deny his signatures with probability 1/4. Then, two possible improved methods are presented to resist these attacks: one is padding constants to reduce probability of the successful attacks, and the other is a circular chained CNOT algorithm to make the attack strategy invalid. And the security analysis shows that both the two improve methods could well resist these attacks.

关键词： arbitrated quantum signature chained CNOT forgery disavowal

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PROBABILISTIC AND AVERAGE LINEAR WIDTHS OF SOBOLEV SPACE WITH GAUSSIAN MEASURE IN SPACE S_Q(T)(1≤Q≤∞)

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Acta Mathematica Scientia 2015年第2期35卷 495-507页

作者：徐艳艳陈广贵甘莹许燕 Lab of security Insurance of cyberspace of Sichuan Province School of Mathematics and Computer EngineeringXihua University school of Mathematics and computer Engineering Xihua University

Probabilistic linear （N, δ）-widths and p-average linear N-widths of Sobolev space W2^r（T）, equipped with a Gaussian probability measure #, are studied in the metric of Sq （T）（1 ≤ Q ≤∞）, and determined the asymptotic equalities：λN,δ（W2^r（T）,μ,Sq（T））={（N^-1）^r＋p/2-1/q√1＋1/N·ln1/δ, 1≤q≤2, （N^-1）^r＋p/2-1/q（1＋N^-1/q√ln1/δ）,2〈q〈∞, （N^-1）^r＋p/2√lnN/δ, q=∞,and λN^（a）（W2^r（T）,μ,Sq（T））p={（N^-1）^r＋p/2-1/q, 1≤q〈∞, （N^-1）^r＋p/2-1/q√lnN, q=∞,where 0 〈 p 〈 ∞, δ∈ （0, 1/2], ρ 〉 1, and Sq（T） is a subspace of L1（T）, in which the Fourier series is absolutely convergent in lq sense.

关键词： Probabilistic linear width Average linear width Gaussian measure Sobolevspace linear operator

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Congruent Feature Selection Method to Improve the Efficacy of Machine Learning-Based Classification in Medical Image Processing

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computer Modeling in Engineering & Sciences 2025年第1期142卷 357-384页

作者： Mohd Anjum Naoufel Kraiem Hong Min Ashit Kumar Dutta Yousef Ibrahim Daradkeh Department of computer Engineering Aligarh Muslim UniversityAligarh202002India College of computer Science King Khalid UniversityAbha61413Saudi Arabia school of Computing Gachon UniversitySeongnam13120Republic of Korea Department of computer Science and Information Systems College of Applied SciencesAlMaarefa UniversityRiyadh13713Saudi Arabia Department of computer Engineering and Information College of Engineering in Wadi AlddawasirPrince Sattam bin Abdulaziz UniversityAl-Kharj16273Saudi Arabia

Machine learning(ML)is increasingly applied for medical image processing with appropriate learning *** applications include analyzing images of various organs,such as the brain,lung,eye,etc.,to identify specific flaws/diseases for *** primary concern of ML applications is the precise selection of flexible image features for pattern detection and region *** of the extracted image features are irrelevant and lead to an increase in computation ***,this article uses an analytical learning paradigm to design a Congruent Feature Selection Method to select the most relevant image *** process trains the learning paradigm using similarity and correlation-based features over different textural intensities and pixel *** similarity between the pixels over the various distribution patterns with high indexes is recommended for disease ***,the correlation based on intensity and distribution is analyzed to improve the feature selection ***,the more congruent pixels are sorted in the descending order of the selection,which identifies better regions than the ***,the learning paradigm is trained using intensity and region-based similarity to maximize the chances of ***,the probability of feature selection,regardless of the textures and medical image patterns,is *** process enhances the performance of ML applications for different medical image *** proposed method improves the accuracy,precision,and training rate by 13.19%,10.69%,and 11.06%,respectively,compared to other models for the selected *** mean error and selection time is also reduced by 12.56%and 13.56%,respectively,compared to the same models and dataset.

关键词： computer vision feature selection machine learning region detection texture analysis image classification medical images

Divisor Class Halving Algorithms for Genus Three Hyperelliptic Curves

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Chinese Journal of Electronics 2020年第1期29卷 97-105页

作者： YOU Lin YANG Yilin GAO Shuhong school of cyberspace security Hangzhou Dianzi University school of Mathematical and Statistical Sciences Clemson University

In an(hyper)elliptic curve cryptosystem,the most important operation or the most time-consuming operation is the divisor scalar multiplication which consists of a sequence of doubling(of divisor) and addition(of two divisors). Point halving algorithms for elliptic curve cryptosystem and divisor halving algorithms for genus-2 hyperelliptic curve cryptosystem had been successively put forward to take the place of doubling algorithms for speeding up(hyper)elliptic curve cryptosystem. We present an outline for an algorithm for divisor halving on genus-3 hyperelliptic curves over the binary field and give some explicit formulae for a class of genus-3 *** algorithm improves previously known best doubling algorithms in most cases. A halve-and-add binary method for divisor scalar multiplications is presented.

关键词： Genus-3 hyperelliptic curve cryptosystem Divisor scalar multiplication Divisor doubling Divisor halving

Sparse signal reconstruction via generalized two-stage thresholding

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Science China(Information Sciences) 2022年第3期65卷 288-289页

作者： Heping SONG Zehong AI Yuping LAI Hongying MENG Qirong MAO school of computer Science and Telecommunications Engineering Jiangsu University Jiangsu Key Laboratory of security Technology for Industrial cyberspace Jiangsu University school of cyberspace security Beijing University of Posts and Telecommunications Department of Electronic & computer Engineering Brunel University London

Dear editor,The sparse representation model has received a great amount of attention in various signal and image processing applications. Compressed sensing(CS) [1] has consistently focused on devising sparse represen... 详细信息

关键词： sparse representation compressed sensing image processing signal processing optimization

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